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    CVE-2017-5940

    Firejail before 0.9.44.6 and 0.9.38.x LTS before 0.9.38.10 LTS does not comprehensively address dotfile cases during its attempt to prevent accessing user files with an euid of zero, which allows local users to conduct sandbox-escape attacks via vectors involving a symlink and the --private option. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-5180.

    Published:Feb 9, 2017
    Last Modified:Apr 20, 2025
    EPS:Feb 9, 2017
    EPSS Score:0.00085
    CVSS Score:8.8

    Affected Products

    Vendor
    Firejail Project
    Product
    Firejail

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-269 Improper Privilege Management

    Related CVEs

    CVE-2022-31214 (CVSS 7.8) — A Privilege Context Switching issue was discovered in join.c in Firejail 0.9.68. By crafting a bogus Firejail …
    CVE-2021-26910 (CVSS 7.8) — Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU rac…
    CVE-2020-17368 (CVSS 9.8) — Firejail through 0.9.62 mishandles shell metacharacters during use of the --output or --output-stderr option, …
    CVE-2020-17367 (CVSS 7.8) — Firejail through 0.9.62 does not honor the -- end-of-options indicator after the --output option, which may le…
    CVE-2019-12589 (CVSS 8.8) — In Firejail before 0.9.60, seccomp filters are writable inside the jail, leading to a lack of intended seccomp…
    CVE-2019-12499 (CVSS 8.1) — Firejail before 0.9.60 allows truncation (resizing to length 0) of the firejail binary on the host by running …
    CVE-2016-10117 (CVSS 7.8) — Firejail does not restrict access to --tmpfs, which allows local users to gain privileges, as demonstrated by …
    CVE-2016-10118 (CVSS 3.3) — Firejail allows local users to truncate /etc/resolv.conf via a chroot command to /.…
    CVE-2016-10119 (CVSS 7.8) — Firejail uses 0777 permissions when mounting /tmp, which allows local users to gain privileges.…
    CVE-2016-10121 (CVSS 7.8) — Firejail uses weak permissions for /dev/shm/firejail and possibly other files, which allows local users to gai…

    References

    http://www.openwall.com/lists/oss-security/2017/01/31/16
    http://www.securityfocus.com/bid/96221
    https://firejail.wordpress.com/download-2/release-notes/
    https://github.com/netblue30/firejail/commit/38d418505e9ee2d326557e5639e8da49c298858f
    https://github.com/netblue30/firejail/commit/903fd8a0789ca3cc3c21d84cd0282481515592ef
    https://github.com/netblue30/firejail/commit/b8a4ff9775318ca5e679183884a6a63f3da8f863
    https://security.gentoo.org/glsa/201702-03
    http://www.openwall.com/lists/oss-security/2017/01/31/16
    http://www.securityfocus.com/bid/96221
    https://firejail.wordpress.com/download-2/release-notes/
    https://github.com/netblue30/firejail/commit/38d418505e9ee2d326557e5639e8da49c298858f
    https://github.com/netblue30/firejail/commit/903fd8a0789ca3cc3c21d84cd0282481515592ef
    https://github.com/netblue30/firejail/commit/b8a4ff9775318ca5e679183884a6a63f3da8f863
    https://security.gentoo.org/glsa/201702-03

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High